Bolt Torque کا حساب کیسے لگائیں
Bolt Torque کیا ہے؟
Bolt torque relates to clamp force, preventing loosening and joint slippage. Proper torque specification is critical for safety.
فارمولا
Calculate: T = K × d × F where K is coefficient (0.15-0.2), d is diameter, F is clamp force
- T
- K × d × F where K is coefficient (0 — K × d × F where K is coefficient (0
- K
- K value — Variable used in the calculation
- F
- T / (K × d) — T / (K × d)
مرحلہ وار گائیڈ
- 1Calculate: T = K × d × F where K is coefficient (0.15-0.2), d is diameter, F is clamp force
- 2Or inverse: F = T / (K × d)
- 3Standard torque specifications follow ASME or ISO standards
حل شدہ مثالیں
ان پٹ
M20 bolt (d=20mm), desired clamp F=100 kN, K=0.17
نتیجہ
Torque ≈ 340 N·m required
Use calibrated wrench
عام غلطیاں جن سے بچنا ہے
- ✕Using dry bolt torque for lubricated conditions
- ✕Over-torquing and yielding bolts
اکثر پوچھے جانے والے سوالات
Why does torque vary by material?
Higher strength steel allows greater clamp force without yielding; coefficient K also varies with surface.
What happens with inadequate torque?
Joint relaxation and slippage; vibration causes eventual failure.
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